Lexus SC430 Key Fob Programming
Updated 2026 2002–2010 9 model years
The Lexus SC430 key fob has to be programmed by an automotive locksmith or dealer — there is no at-home procedure. Below is the exact replacement fob you need for each model year (FCC ID and part number), the battery it takes, and what programming costs.
Every Lexus SC430 model year
| Year | Programming | Key fob | Battery |
|---|---|---|---|
| 2010 |
| Transponder Key | None (chip key) |
| 2009 |
| Transponder Key, Remote Head Key · 3-button | CR2025 battery on Amazon |
| 2008 |
| Transponder Key, Remote Head Key · 3-button | CR2016 battery on Amazon |
| 2007 |
| Transponder Key, Remote Head Key · 3-button | CR2016 battery on Amazon |
| 2006 |
| Transponder Key, Remote Head Key · 3-button | CR2016 battery on Amazon |
| 2005 |
| Transponder Key, Remote Head Key · 3-button | CR2016 battery on Amazon |
| 2004 |
| Transponder Key, Remote Head Key · 3-button | CR2016 battery on Amazon |
| 2003 |
| Transponder Key, Remote Head Key · 3-button | CR2016 battery on Amazon |
| 2002 |
| Transponder Key, Remote Head Key · 3-button | CR2016 battery on Amazon |
2010 Lexus SC430
Remote / key fob programming
This remote can't be programmed with a do-it-yourself procedure. The vehicle needs a diagnostic tool connected to its OBD port to pair a new remote, so a replacement has to be set up by an automotive locksmith or a dealer.
Order the correct replacement remote below — match the FCC ID on your current fob first — then have a local automotive locksmith or the dealer program it to your vehicle.
Key programming
This key fob can't be programmed with a do-it-yourself procedure. The vehicle needs a diagnostic tool connected to its OBD port to pair a new fob, so a replacement has to be set up by an automotive locksmith or a dealer.
Order the correct replacement fob below — match the FCC ID on your current fob first — then have a local automotive locksmith or the dealer program it to your vehicle.
Replacement key fob
Find your key type below, then match the FCC ID printed on the back of your existing fob — or, for a plain transponder key, the blank code — to be sure of the right part.
Transponder Key
A cut metal key with a chip in the head. No buttons.
Transponder Key
Find on Amazon- Key blank
- BLXP90-P, LXP90, TR49P
- OE part #
- BLXP90-P, LXP90
Photos show the OEM part for each number listed. Aftermarket replacements sold online are often slightly different in appearance — the FCC ID, not the shape, is what determines whether a fob will work with your car.
2009 Lexus SC430
Remote / key fob programming
This remote can't be programmed with a do-it-yourself procedure. The vehicle needs a diagnostic tool connected to its OBD port to pair a new remote, so a replacement has to be set up by an automotive locksmith or a dealer.
Order the correct replacement remote below — match the FCC ID on your current fob first — then have a local automotive locksmith or the dealer program it to your vehicle.
Key programming
This key fob can't be programmed with a do-it-yourself procedure. The vehicle needs a diagnostic tool connected to its OBD port to pair a new fob, so a replacement has to be set up by an automotive locksmith or a dealer.
Order the correct replacement fob below — match the FCC ID on your current fob first — then have a local automotive locksmith or the dealer program it to your vehicle.
Replacement key fobs
Find your key type below, then match the FCC ID printed on the back of your existing fob — or, for a plain transponder key, the blank code — to be sure of the right part.
Remote Head Key
2 versionsOne piece: a cut metal blade with the lock/unlock buttons built into the head.
3-button Remote Head Key
Find on Amazon- FCC ID
- HYQ1512V
- OE part #
- 24020, 24021, 50021, 89070-50170, 89070-53530, 89070-53531
- Frequency
- 315 MHz
- Chip
- TEXAS ID 4C TAG
3-button Remote Head Key
Find on Amazon- FCC ID
- HYQ12BBT
- OE part #
- 89070-33750, 89070-33751, 89070-50170, 89070-53530
- Frequency
- 315 MHz
- Chip
- TEXAS ID 4D 68 LEXUS (DOT CHIP)
Transponder Key
A cut metal key with a chip in the head. No buttons.
Transponder Key
Find on Amazon- Key blank
- BLXP90-P, LXP90, TR49P
- OE part #
- BLXP90-P, LXP90
Photos show the OEM part for each number listed. Aftermarket replacements sold online are often slightly different in appearance — the FCC ID, not the shape, is what determines whether a fob will work with your car.
2002–2008 Lexus SC430
Remote / key fob programming
This remote can't be programmed with a do-it-yourself procedure. The vehicle needs a diagnostic tool connected to its OBD port to pair a new remote, so a replacement has to be set up by an automotive locksmith or a dealer.
Order the correct replacement remote below — match the FCC ID on your current fob first — then have a local automotive locksmith or the dealer program it to your vehicle.
Key programming
This key fob can't be programmed with a do-it-yourself procedure. The vehicle needs a diagnostic tool connected to its OBD port to pair a new fob, so a replacement has to be set up by an automotive locksmith or a dealer.
Order the correct replacement fob below — match the FCC ID on your current fob first — then have a local automotive locksmith or the dealer program it to your vehicle.
Replacement key fobs
Find your key type below, then match the FCC ID printed on the back of your existing fob — or, for a plain transponder key, the blank code — to be sure of the right part.
Remote Head Key
3 versionsOne piece: a cut metal blade with the lock/unlock buttons built into the head.
3-button Remote Head Key
Find on Amazon- FCC ID
- HYQ12BBB, HYQ12BBK
- OE part #
- 89070-24171, 89070-50660, 89070-50C11
- Frequency
- 315 MHz
- Chip
- TEXAS ID 4D 68 LEXUS (DOT CHIP)
3-button Remote Head Key
Find on Amazon- FCC ID
- HYQ1512V
- OE part #
- 24020, 24021, 50021, 89070-50170, 89070-53530, 89070-53531
- Frequency
- 315 MHz
- Chip
- TEXAS ID 4C TAG
3-button Remote Head Key
Find on Amazon- FCC ID
- HYQ12BBT
- OE part #
- 89070-33750, 89070-33751, 89070-50170, 89070-53530, 89070-60080, 89070-60081 +1 more
- Frequency
- 315 MHz
- Chip
- TEXAS ID 4D 68 LEXUS (DOT CHIP)
Transponder Key
A cut metal key with a chip in the head. No buttons.
Transponder Key
Find on Amazon- Key blank
- BLXP90-P, LXP90, TR49P
- OE part #
- BLXP90-P, LXP90
Photos show the OEM part for each number listed. Aftermarket replacements sold online are often slightly different in appearance — the FCC ID, not the shape, is what determines whether a fob will work with your car.
- 2002–2008
- CR2016 battery on Amazon
- 2010
- No battery
2002–2008 Lexus SC430 key fob battery
Your 2002–2008 Lexus SC430 key fob uses a CR2016 3V lithium coin cell. A fresh one typically lasts 3–5 years.
Buy Energizer CR2016 Lithium Coin Batteries (2-pack) on AmazonHow to replace the battery
- 1 Look for a small notch or screw on the side of the fob where the key blade meets the buttons.
- 2 Pry the housing apart with a coin or small flathead (or remove the screw).
- 3 Pop out the old coin cell, noting its orientation.
- 4 Insert the new battery the same way up, then snap the case shut.
- 5 Test the buttons — if they work, you're done.
Battery tips
- Use a fresh, name-brand 3V lithium cell — bargain cells drain quickly.
- Try not to touch both faces of the new battery; skin oils shorten its life.
- If the buttons still don't respond after a new battery, the remote may need re-syncing or programming.
2009 Lexus SC430 key fob battery
Your 2009 Lexus SC430 key fob uses a CR2025 3V lithium coin cell. A fresh one typically lasts 3–5 years.
Buy Energizer CR2025 Lithium Coin Batteries (4-pack) on AmazonHow to replace the battery
- 1 Look for a small notch or screw on the side of the fob where the key blade meets the buttons.
- 2 Pry the housing apart with a coin or small flathead (or remove the screw).
- 3 Pop out the old coin cell, noting its orientation.
- 4 Insert the new battery the same way up, then snap the case shut.
- 5 Test the buttons — if they work, you're done.
Battery tips
- Use a fresh, name-brand 3V lithium cell — bargain cells drain quickly.
- Try not to touch both faces of the new battery; skin oils shorten its life.
- If the buttons still don't respond after a new battery, the remote may need re-syncing or programming.
2010 Lexus SC430 key fob battery
A plain transponder (chip) key has no battery. The immobilizer chip inside is powered by the car's ignition ring whenever you turn the key, so there's nothing to replace. If your key also has lock/unlock buttons, that remote portion uses a 3V coin cell — see the remote battery steps for that.
Battery tips
- If your engine won't start but the key turns, the issue is usually a worn key or the immobilizer reading the chip — not a battery.
- A spare chip key must be cut and programmed to your car before it will start the engine.
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